Univation Technologies, LLC

Union Carbide Chemicals & Plastics Technology Corporation

John Henry Oskam

Timothy R Lynn

Kersten Anne Terry

Timothy Todd Wenzel

Mark Gregory Goode

John Francis Szul

Sun-Chueh Kao

Robert J Jorgensen

David H McConville

Simon Mawson

Tae Hoon Kwalk

Matthew Gary McKee

Robert Harold Vogel

Michael D Awe

Natarajan Anand Muruganandam

Gregory T Whiteker

Bruce Jon Savatsky

David James Schreck

Daniel Paul Zilker, Jr

Mark Bradley Davis

Clark Curtis Williams

Thomas Henry Peterson

Mark Williams Blood

Purna Chand Sishta

Vincent P Morrison

Wesley R Mariott

Phuong Anh Cao

Cliff Robert Mure

Daniel P Zilker

Douglas H Jackson

Spray-dried catalyst compositions comprising a transition metal complex and polymerization processes employing the same are disclosed herein. An embodiment provides a spray-dried catalyst composition comprising a transition metal catalyst component represented by the following formula: (I) and polymerization process employing the same. 

Spray-dried catalyst compositions and polymerization processes employing the same

A method of performing a polymerization reaction in a gas phase polymerization reactor to produce a bimodal polymer while controlling activity of a bimodal polymerization catalyst composition in the reactor by controlling concentration of at least one induced condensing agent ('ICA') in the reactor is provided. In some embodiments, the ICA is isopentane (or another hydrocarbon compound) and the bimodal catalyst composition includes a Group 15 and metal containing catalyst compound (or other HMW catalyst for catalyzing polymerization of a high molecular weight fraction of the product), and a metallocene catalyst compound (or other LMW catalyst for catalyzing polymerization of a low molecular weight fraction of the product).

Method for controlling bimodal catalyst activity during polymerization

A system and method for olefin polymerization is provided. The method includes polymerizing one or more olefins within a reactor having one or more injection tubes in fluid communication therewith, at least one of the one or more injection tubes having two or more concentric flow paths; flowing a catalyst through a first flow concentric path of the injection tube into the reactor; flowing one or more monomers through a second concentric flow path of the injection tube into the reactor; measuring rate of heat removal within the reactor; and adjusting the one or more monomers flow through the injection tube in response to the rate of heat removal in the reactor.

Method for preventing catalyst agglomeration based on production rate changes

A method for preparing a spray dried catalyst and a low viscosity, low foam spray dried catalyst system for olefin polymerization are provided. In one aspect, the method includes preparing a catalyst system including one or more components selected from metallocenes, non-metallocenes, and activators, adding mineral oil to the catalyst system to form a slurry, and adding one or more liquid alkanes having three or more carbon atoms to the slurry in an amount sufficient to reduce foaming and viscosity of the slurry. In one aspect, the catalyst system includes one or more catalysts selected from metallocenes, non-metallocenes, and a combination thereof, wherein the catalyst system is spray dried. The system further includes mineral oil to form a slurry including a catalyst system, and one or more liquid alkanes having three or more carbon atoms in an amount sufficient to reduce foaming and viscosity of the slurry.

De-foaming spray dried catalyst slurries

The invention provides for polymerization catalyst compositions, and for methods for introducing the catalyst compositions into a polymerization reactor. More particularly, the method combines a catalyst component containing slurry and a catalyst component containing solution to form the completed catalyst composition for introduction into the polymerization reactor. The invention is also directed to methods of preparing the catalyst component slurry, the catalyst component solution and the catalyst compositions, to methods of controlling the properties of polymer products utilizing the catalyst compositions, and to polymers produced therefrom.

Bimodal polyolefin

Polymerization process

Polymerization catalyst compositions

This invention relates to a composition of matter comprising the catalyst compound comprising a transition metal complexed with a facially coordinating tridentate bisamide ligand. The invention is also directed to a catalyst system or a supported catalyst system comprising this compound and an activator and to a process for using the catalyst system or supported catalyst system in a process for polymerizing olefin(s).

Catalyst composition and method of polymerization

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Flemington, NJ, United States of America

John Henry Oskam